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in_pcb.h revision 1.5 
      1 /*
      2  * Copyright (c) 1982, 1986, 1990 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	from: @(#)in_pcb.h	7.6 (Berkeley) 6/28/90
     34  *	$Id: in_pcb.h,v 1.5 1994/01/08 21:21:41 mycroft Exp $
     35  */
     36 
     37 #ifndef _NETINET_IN_PCB_H_
     38 #define _NETINET_IN_PCB_H_
     39 
     40 /*
     41  * Common structure pcb for internet protocol implementation.
     42  * Here are stored pointers to local and foreign host table
     43  * entries, local and foreign socket numbers, and pointers
     44  * up (to a socket structure) and down (to a protocol-specific)
     45  * control block.
     46  */
     47 struct inpcb {
     48 	struct	inpcb *inp_next,*inp_prev;
     49 					/* pointers to other pcb's */
     50 	struct	inpcb *inp_head;	/* pointer back to chain of inpcb's
     51 					   for this protocol */
     52 	struct	in_addr inp_faddr;	/* foreign host table entry */
     53 	u_short	inp_fport;		/* foreign port */
     54 	struct	in_addr inp_laddr;	/* local host table entry */
     55 	u_short	inp_lport;		/* local port */
     56 	struct	socket *inp_socket;	/* back pointer to socket */
     57 	caddr_t	inp_ppcb;		/* pointer to per-protocol pcb */
     58 	struct	route inp_route;	/* placeholder for routing entry */
     59 	int	inp_flags;		/* generic IP/datagram flags */
     60 	struct	ip inp_ip;		/* header prototype; should have more */
     61 	struct	mbuf *inp_options;	/* IP options */
     62 	struct	ip_moptions *inp_moptions; /* IP multicast options */
     63 };
     64 
     65 /* flags in inp_flags: */
     66 #define	INP_RECVOPTS		0x01	/* receive incoming IP options */
     67 #define	INP_RECVRETOPTS		0x02	/* receive IP options for reply */
     68 #define	INP_RECVDSTADDR		0x04	/* receive IP dst address */
     69 #define	INP_CONTROLOPTS		(INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
     70 
     71 #ifdef sotorawcb
     72 /*
     73  * Common structure pcb for raw internet protocol access.
     74  * Here are internet specific extensions to the raw control block,
     75  * and space is allocated to the necessary sockaddrs.
     76  */
     77 struct raw_inpcb {
     78 	struct	rawcb rinp_rcb;	/* common control block prefix */
     79 	struct	mbuf *rinp_options;	/* IP options */
     80 	int	rinp_flags;		/* flags, e.g. raw sockopts */
     81 #define	RINPF_HDRINCL	0x1		/* user supplies entire IP header */
     82 	struct	sockaddr_in rinp_faddr;	/* foreign address */
     83 	struct	sockaddr_in rinp_laddr;	/* local address */
     84 	struct	route rinp_route;	/* placeholder for routing entry */
     85 };
     86 #endif
     87 
     88 #define	INPLOOKUP_WILDCARD	1
     89 #define	INPLOOKUP_SETLOCAL	2
     90 
     91 #define	sotoinpcb(so)	((struct inpcb *)(so)->so_pcb)
     92 #define	sotorawinpcb(so)	((struct raw_inpcb *)(so)->so_pcb)
     93 
     94 #ifdef KERNEL
     95 struct	inpcb *in_pcblookup();
     96 #endif
     97 
     98 #endif /* !_NETINET_IN_PCB_H_ */
     99